One thought: I don't know if making/chilling dough a day ahead of baking is just a matter of time, but if not - unlike most cookies, that are best eaten the day they're baked, biscotti keep really well. In fact, I think they often get better after a couple of days. I've made them many times for parties or to send as gifts for that exact reason. (This may not be true for your recipe, but I've done it w/success for many variations of 'classic' biscotti - which are baked in a log, sliced, baked again.)